IWRA World Water Congress 2008 Montpellier France
5. Water Governance and Water Security
Author(s): Fanghua Hao
Hao Chen
Xuelei Wang
ShengTian Yang
Wei Ouyang PhD candidate 1. School of Environment,
State Key Laboratory of Water Environment Simulation, Beijing Normal University
2. International Institute for
Geo-Information Science and Earth Observation (ITC), Netherlands
Fanghua Hao Prof/Doc Sch
Keyword(s): eco-environmental water requirements, water
resource allocation, water quality goal, pollutant dilute water requirement
Article: PDFPoster: PDFAbstractWith the rapid economic developments in China, the future water resource developments should be sustainable and
that a component of the natural flow of rivers should be reserved to ensure diverse ecological functioning. In last 15
years, ecological instream flow requirements (EIFR) research of river was one of the main and hot fields for eco-
hydrology scientists. To coordinate with the water resource allocation, we evaluated EIFR of Pihe River section in
every 12 month of three typical years (1968, 1986 and 1987). The Montana methodology was widely applied in
water requirements estimate and proved usefully. Based on natural characters of Pihe River, minimum and optimum
water requirement of aquatic habitat for the river maintenance were counted. Evaporation water requirement of Pihe
River was computed too, which is related with the width of water surface, the river length and evaporation depth.
Considering the water quality goal, diluting pollutant water requirement was taken into accounted. Then the EIFR of
the river of 12 month were ultimately ascertained. Among them, that was 20.64m3/s and the minimum eco-
environmental water requirement of the river was 25.84m3/s.